Dry-pipe valve.



PATENT'ED SEPT. 10, A1907.

0.3. GARRETT. DRY PIPE VALVE. APPLIQATION IIILED JAN. 24. 19`05.

' 2 SHEETS-SHEET 1 PATENTBD SEPT. 10, 1907.

C. -B. GARRETT.' DRY PIPE VALVE. .APPLICATION FILED JAN. 24. 1905.

UNITED Sra'r s. si*

NT OssIfOE.

oIIABLES B. GARBETT, OE MINNEAPOLIS, MINNESOTA ASSIGNOR, BY DIRECT ANDMESNE ASSIGNMENTS, To THE GLOBE AUTOMATIO SIBINKLER COMPANY, OEMINNEAPOLIS,

MINNESOTA, A CORPORATION OE I/IINNESOTA.

Blijf-PIPE VALVE.

Specification eit yLetters Patent. l

Patentes sept. 1o,` 1907.

Apparition sies January 24,1905. sans No. 242,501.

' vented certain new and useful Improvements in Dry- Pipe Valves; and Ido hereby declare the following to be a full, clear, and enactdescription o the invention, such as will enable botllers'skilled in theart which it appertainsto make and use the same. l

My present invention relates to dry pipe ire extin. guishing systems,and has for its especial object Ato imf prove the construction oi thattype of drypipe valves set forth and claimed in my U. S. Letters PatentNo, 831,054 issued of date Sept. 18th, 1906,'dry pipe valve.

The invention is illustrated in the accornpanying drawings, wheiein likecharacters indicate like parts l throughout the several views.

Referring to the drawings, Figure 1 is a vertical section, takencentrally through a dry pipe valve embodying the several ieaturesoi myinvention. Figl.-.2 isa positions oi the parts; Figs. 3 and 4 are detailviews in side elevation, showing a circuit closer of an electrical alarmdevice, and also associated parts for operating the a same; Fig. 5 is asection on the line x5 x5 of Fig. 4, show ing also, in diagram, thealarm circuit. Fig.- 6 is a sec tion on the line zo :1:5 of' Eig. 2; andFig. 7 is a section on aline $7.957 of Fig. 2. Y v I The body l yofthe.' valve casing or shell is interposed in, Aand forms part oi avertical conduit or riser 2 oi the lfire extinguishing system, and isformed with three valve-seat-equipped openings 3, 4 and 5. The valveseat 3 constitutes the water inlet passage, and is located in the bottomof the said casing orshell 1. The valve seatfl affords the water outletin the casing, and islocated in an inclined upper wall l, which dividesthe casing into two compartments. .The .valve seat 5 is located i'noneside of the casing, and serves a purpose vwhich will hereinafterappear. Thevalve seats 3, 4

and 5 are adapted to be closed by valves, which may be treatedrespectively as the water inlet valve, the water outlet' valve, and theintermediate or vent Naive. The water inlet valve discarried by an arm 7iulcrurned to a bearing 8 securedfto, and within, the casing 1, at oneside oi the valve seat 3. As shown,'said valve 6 is prol vided with anutted stem 9 that works loosely through the srx'n 7, said arm 7 isprovided with a plurality of set screws 10 that press upon said valve,and hold the same firfrnly seated when the free end oi saidarrn 7 ispressed d" wnward. The water outlet valve 11 is carried by, and has aslight 'pivotal movement on an arm 12, pivoted to ,a bearing 13 rigidlysecured on top of the wall or partition 1*.V ,0n its underface,c thevalve llis prowith a @sastre block si an abutment 14 sans adapted to beset and held in different positions, by an adjusting screw 15, seated ina lug on said valve. l v A tripping lever 16 is pivoted at itslower-end, to a bearing 17. Near its pivoted end,`the lever 16 isprovided with a projecting heel or lug l18 that normally presses againstthe ree end oi the valve arm 7, to hold said valve closed., The freeupper end of this tripping lever terminates at such point that it willengage the cam block or abutment 14 oi the valve 11, when the two valves6 and 1l are in closed positions, as shown in Fig. 1. The intermediateor vent valvel 19 is carried by the tripping lever 16 and, as shown, ispivoted thereto at such point that when the tripping arm movesl into theposition shown in Fig. 2, it will closel the vent afforded by the valveseat 5. A suitable connection, such as a chain 20, is attached to theventryalve 19, is passed out- Ward'through the vent or valve seat 5,runs over a @ride sheave 21 on a bracket 22, rigidly secured to thecasing 1, and, as shown, is attached, at its outer end, to a head--edbolt 23T A plurality o i weights 24, placed on thev head of the bolt23, put the trip arm 16 .under a strain which tends to open they wateroutlet valve l1, and to close the vent valve 19, all as will hereinaftermore fully app ear.

' To the ree endoi the valve arm 7 is pivoted a gravity I shown, followsthe path of movement of the free end of the arm 7. Thenumeral 27indicates a spring latch which, when the aun 7 and valve 6 are movedinto the extreme position indicated by dotted lines in Fig.- 2,

springs in iront of the free end o said lever 7 and pre vents the same,and said vvalve 6iro1nifalling back into or toward their normalpositions.

The numeral 28 indicates a spring buffer, secured within, and to oneside, oi the casing, in position to engage the stem 9 ofthe valve' whenthe said valve is thrown into its extreme open position. A second valveintercepting lever or arm 29 is pivoted at one end to the upper portionoi the guide 26, and at its'other end is attached, at 30, t0 theintermediate portion of a chain or v other flexible connection 31. Oneend of said chain 31 is anchored at 32 to the web lg of the casing, andits ether end is attached'at 33 to the reeend of the tripping lever 1G.The'int-ercepting arm 29, the chain 31, the trippingdever 16, and thecam abutment 14 of the water outlet valve 11, are so related that 'whensaid trippingr nrm is movvd into the position indicatvd in Fig. 2, snidintvrvvpting nrm :Z9 will vngnge said abutnn-nt nntl pos-iiivvly holdsttid valve opvued to a com.

sidvrnhltl vxtvnt. thvrvhy prvvvnting rvsvating of said rnlrv ll -in'tvrit hns onvv hvvn opvnvd. The importnnvv ol' th'v vnlvv-inlvrvvptirgdovivvs jui-ist dvscrihvd will hv hilly stntvtl in thv dvsvription oftheopvration.

hnnd-hnlv opvnintr. n. primvr pnssiigv. and a. tvst tube pnssngv. whivhopvnings itrv lovntctl in thv upper vompzt-rtnlvnt lnlY thv vnsinl. undm'v normally Closvd. The nmnvrnl Il? ndivntvs at. small pipv whivhlvttds from the tippt-r vontp-.trt nn-nt. of thv vus-ing to n prvssurvugo (not lshown t. 'l`hv nnmvrn-l 38 indivtttvs :t dvtuvhzthlv,housing.whivh'is npplivd to thv vusing l und invlosvs thv `gnidv shv-.irv l, thvwvights 214. und othvr associated pnrts.

'I`hvy vlvvtrivnl nrm circuit vomprisvs lvztds 3S), zt hat; tvry `ll).:tn vlvvtriv hvll 4l, and vontnvts 4t2. Tllv vontztvts L'l2 ztrv, asshown. svvurvd to :tu insulating hlovk 43, whivh, in turn, is svvurvd tothv vnsingl slightly hvlow. :tnd `slightly to onv sidv ot' thv ontvrlvnd o thv vulvv svttt 5. Normally thv cirvuit is hrokvn bvtwvvn thvvontnvts 4:2, hut is :tditptvd to hv vlosvdhy a. `mvtnllit` hlttdv 44pivotvtl to n. Lv-.iring 45 on the insulating hlovk (iii. Thv gliidvshvztvv 2l is svcurvd on v. short shaft 4H Whivh vtrrrivs, :tt nnv vnd.n tppvt 47 whivh, whvn -movvd, from thv position shown in Fig. 3 intothv pvsition shown in Fig. -l, strikvs said hl-.tdv 44. forvvs thv samt`hvtwvvn thv vontzwts 42, :tnd vlosvt-t thv ulatrm virvuit, thvrvhysounding im alarm. y

(lpvntt it in. Iu vztlvvs of thvvhamtvtvrtthovvdvsvrihud, .whvn thvwntvr inlvt :uid ontlvt. vnlvvs uro'vsuddvnly opvnvd. :is will hv thvvnsv whvn Onv or morv spriuklvrs ttrv thrown into :it-tion. :ind thv:tir prvssurv ou thv wattvr ontlvt vttlvv is dvvrvnsvd. thv wtttvr willrush rapidly up into thv risvr und, hy :tvqnirvd motnvntntn; will `invrvnsv thv nirprvssnrv in thv risvr to snvh nu vxtvnj that lhvrv will hvprodnvvd :t rvvvssion or h-.tvkwn-rd flow 0l' ltltv volnmtfol wittvr.listin-ily thvrv will hv Svvvrttl w-.tvvs or rvrvrsv vihrntions produvvdin thv risvr hvfnrv thv nir ttnd thv wittvr prvss'urv is vqunlizvd. nudhvfurv thv nir hns hvvn vutirvly vxhnnstvd from thv rsvr. Ilvnvv. unlvsssnniv mv-.tns hv providvd for prvvvnting,Y thvsv vn-lvvs from livingnuttin svntvd, ntvrthvy ttrv onvv opvnvd, thvy will hv ptnmdvd uponthvir svnts to `snvh :in vxtvnt tlntt usually thvy will not form tightjoints wit h thvir svnts in'tvr onv opvning hns tttkvn plnvv.l"nrthvr|norv, unlvss moans hv providvd for prvrvntng` simultttnvonsrvsvttting ot' thv wtrtvr inlvt :ind ontlvt.

ol thv nir; :tud to thv dillvrvntinls ol nrvtt ot' thv uppvr :rnd lowvrportions` nl' thv \'.tlvvs, is liithlv to rvsult in wh-.tt is known :iswntvr voltimn. :t vondilion htmiliur to thosv l'nmilinr with tirv,vxtingnishing systvms.

'l`hvsv litnitntions to thv propvr nvtinu ol' n Iirv vxtinf partxnvnt ofthe casing] :md in thv nppvr portion ot' thv risvr. Whvn thv said valvvl1 is hvld vlosvd. its nhutmvnt 14 holds thv tripping lvvvr lt in thvposition iudi- Catcd in Fig. I, und thv'sztd lvYvr. in'turn. holds thvvent valve Il) in un opvnposition. :1nd holds thv watt-r inlet valve 6in :t vlosvd position. Whvnvvvr thv air pressure on the valve l1 isrvdnvvtl hvlow n prvdvtvrmined point, dvpvnding on thv nmnhvr ofwvightst npplivd tothe outer vnd ot' thv vhain 2UN thv stratil pre1duced by thv tipplivd wvights 24, acting throngh the vhin 20, vand onthvtripping lcvvr 16, vtntsvs thv said lvvvr to foijvv thv waiter outlvtvalve 1l opvn, with a comming action, and to movv into the positionindimtvd in Fig. }2 nd thvrvhy C2i-uso the vvnt vnlvvV I9 to vlnsv thvvent 5 and rvlvusv thv water inlvt volvo 6. This movvmvnt of thetripping lvvvr I6 Straightons out thv chain 3l and ntovvs thvintvrc'vpting arm or stop 29 into u position to vngngv the abutlnvnt ifiand positirvly prvvvnt thv wntvr outlet vulve Il from rtg-.1in beingtlosvd.

In Fig. 2, thv wuteradmission valv'e is, hy full linvs, shown as havingbvvn released, but as not. having yvt hvvn opvnvd hy the upward prvur ofwitter in thv lowvr portionof 'thv risvr. tvr prvssnrv hving applied tothv said inlvt vnlvv, sind thv snid vnlvv living rvlvnsed, it would bethrown immvdintvlyinto thv vxtrvme open position, and will tnppvt. -l7to mow thv contact. blad'v 44 into'thv position inditatvd in Figs. 4 und5. thvrvhy closing the alarm vircuit, and actuating the alarm.

From what has h vvn saith-it will be undvrstood that the valvexnvvhiinism dvsvribqd-s capable of ntotlitiozttion within thv. scopo `ofmy' invvntion :ist hvrvin svt l'nrth and vlttimvd. I Y

What I vlztim und dvsirv to secure hy Letters Patent of thv UnitvdSta-tvs is :is follows:

1. In n dry plpv vnliv. n tasint: forming part ot' the conduit of n tirvvxtlngnlshlng systvm. and' hurluf.: thrvv opvnlngs. thrvv svpnrntv undindvpendent rnlvvs adapted to opvn und vlnsv snld thrvv openings, meanst'or opening onv of snd vnlvvs nntLvlosIni; imother, und nivnng forprvvvnttnp: thv rv-vloslng vnt the opened -vnlvv snhstnw tnlly nsdt'\svrlhvd. A

In n dril pipt,\'i1l\'v, u vnslnt: forming pnrt of a vonlntI ot zr lrvvxtiugnlshing: systvm und lntvng thrvvl opvnings. thrvv rllrvs svpnrnteund lndvpvndvnt for openn: nml vlosln'.v snld thrvv npvnlngs two thvrvofhvtng normally vlnsvtl, nnd thv third helm: normally oprvn. invnnuvnntrollhn.r thv ,npvulng of sntd two normally vlosvd rnlvvs nud lorvloslng; snld n ornmlly opvn valve. und nn intvrvvpthn: dvvivv forprvrvntlng thv rv-vloslnie; of onv nud uutlvt valrvnl und lntvt'veptlugdvrlves for tirata-outing usually hv vimght. and held in the positionindicii'tvd hy l lli) `,iending to 5f" mounted on n iixed support,connected ty said tripping in a dry pipe vulve, the combination with aninlet I valve normally holding buck the water supply. of an air sentedoutlet valve normally closim,r the water outlet, an f oscillatingtripping lever for opening said secondary valve,

and for norm-.illy holding' said inlet valveclosed. means move saidlever. und un intercepting arm lever; and movitble thereby into aposition to prevent re closing of said outlet valve, substantially undescribed.

il. in n dry pipe vulve, u combinati n with un inlet valve normallyvholding buck the water/supply, of an air seated outlet valve normallyclosing the water outlet, an oscillating trippingdever openingy saidsecondary valve and for normally holdingr said inlet vulve closed, mennstending to move said lever, und un interccpting' arm pivoially mountedon nixed support, connected to said tripping-lever by :1 iiexibleconneciiox/o end oi? which is nnchoredsaid lntercepting arm coperntingwith a cam abutment on said outlet valve to prevent ret-losing of suid/lvulve, substantially as described. f

7. in n dry pipe valve, the combination with a water inlet valvenormally holding baci: the water supply, oi' an nir sented water outletvalve, un sir vent in the casing of said dry pipe valve, un oscillatingtripping lever ioreeptini,r device coliperating with `011e o the twonormally closed vulves to prevent rcclosing thereof, substantially :isdescribed.

8. in :1 dry pipe vulve, the combination with a water inletvalvonormuliy holding haelt the water supply, of an nir .sented wateroutlet valve, an air vent in the casing of 'unid dry pipe vulve, nnoscillating tripping lever for opening said outlet valve and forhoidingjsaid inlet valve elosedjs. vent valve curi-led by said 'trippinglever, the movement of which tripping lever serves to open said out letvalve and close said vent valve, aud interc`epting devices coperutingwith said linlet and outlet valves, to prevent reclosing thereof,substantially ns described.

9. in u dry pipe valve, the combination with an inlet valve normallyholding hack the water supply, of a pivoted lever to which said valve isapplied, and an intercepting nvm pivoted to Suid lever and having suchlength when swung,r downward, upon opening said valve, a predeterminedamount, it will bold said valve against reeloslng,

substantially as described. A

14). in a dry pipe vulve the combination with a valve normally holdingbaci'` the water supply, of a pivoted und outlet vulves, substantiallyr:is l

lever in which said valve is applied, means operative on -suid lever forhoiding said vulve closed and for releasing the sanne, and n yieldinglatch in the path ot movement` of the free end oi' said lever, operativethereon to hold said valve in a "vv/ide open" position, substantially asdescribed.

il. In a dry pipe valve, a casing forming part of a conduit ot n tireextinguishing system and having three openings, two valves normally`closing two ot said openings, a

normally open vent vulve for closing the vthird opening, a.

lever to which said ventvalvc is applied, normally operan ing to holdsaid inlet valve closed, and itself normally held against movement bysaid inlet valve, a shesvev mounted outside of said casing, a weightedconnection running .over said sheave and attached to said lever, formoving the sume when released, and :1n electric alarm device having thecircuit closer directly connected to said sheave and arranged to beoperated by movement of said sheave, and when said lever is released,substantially as described.

12. The combination with n casing forming part of n conduit, of an inletvulve normally holding back the Water supply, a pivotcd arm, to theintermediate portion of which seid inlet valve is applied, and asegmental guide fillowlng the path of movement of the 'free end of saidvurm and limiting the lateral movements of said rm, substantinlly asdescribed.

13. The combination with a casing forming part of a conduit of a tireextinguishing system, ot un inlet valve normally holding back the watersupply, an arm plvoted' at one end within said casing, and to theintermediate portion of which said inlet valve is applied, a segmentalguide following the path of movement of the free end of said arm andlimiting the lateral movements thereof, a latch applied at the upperextremity of said guide, for operation on the free end of said arm, tohold said inlet valve open, and un lnterceptlng arm pivoted to the freeend of said valve-carrying arm, substantially asdescribed.

14. 'the combination with a casing forming part of the conduit of a lireextinguishing system, and having inlet and outlet passages, inlet andoutletvalves normally closing said passages, a plvoted arm, to theintermediate portion of which said inlet valve is applied, a segmentallCHARLES .13. GARRETT.

Witnesses R. C. MAsnr, F. D. MERCHANT.

in presence

